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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "ImageLoader.h"
#include "CSSHelper.h"
#include "CachedImage.h"
#include "DocLoader.h"
#include "Document.h"
#include "Element.h"
#include "RenderImage.h"
namespace WebCore {
ImageLoader::ImageLoader(Element* elt)
: m_element(elt)
, m_image(0)
, m_firedLoad(true)
, m_imageComplete(true)
, m_loadManually(false)
{
}
ImageLoader::~ImageLoader()
{
if (m_image)
m_image->removeClient(this);
m_element->document()->removeImage(this);
}
void ImageLoader::setImage(CachedImage* newImage)
{
CachedImage* oldImage = m_image.get();
if (newImage != oldImage) {
setLoadingImage(newImage);
m_firedLoad = true;
m_imageComplete = true;
if (newImage)
newImage->addClient(this);
if (oldImage)
oldImage->removeClient(this);
}
if (RenderObject* renderer = element()->renderer()) {
if (!renderer->isImage())
return;
static_cast<RenderImage*>(renderer)->resetAnimation();
}
}
void ImageLoader::setLoadingImage(CachedImage* loadingImage)
{
m_firedLoad = false;
m_imageComplete = false;
m_image = loadingImage;
}
void ImageLoader::updateFromElement()
{
// If we're not making renderers for the page, then don't load images. We don't want to slow
// down the raw HTML parsing case by loading images we don't intend to display.
Element* elem = element();
Document* doc = elem->document();
if (!doc->renderer())
return;
AtomicString attr = elem->getAttribute(elem->imageSourceAttributeName());
// Do not load any image if the 'src' attribute is missing or if it is
// an empty string referring to a local file. The latter condition is
// a quirk that preserves old behavior that Dashboard widgets
// need (<rdar://problem/5994621>).
CachedImage* newImage = 0;
if (!(attr.isNull() || attr.isEmpty() && doc->baseURI().isLocalFile())) {
if (m_loadManually) {
doc->docLoader()->setAutoLoadImages(false);
newImage = new CachedImage(sourceURI(attr));
newImage->setLoading(true);
newImage->setDocLoader(doc->docLoader());
doc->docLoader()->m_docResources.set(newImage->url(), newImage);
} else
newImage = doc->docLoader()->requestImage(sourceURI(attr));
}
CachedImage* oldImage = m_image.get();
if (newImage != oldImage) {
setLoadingImage(newImage);
if (newImage)
newImage->addClient(this);
if (oldImage)
oldImage->removeClient(this);
}
if (RenderObject* renderer = elem->renderer()) {
if (!renderer->isImage())
return;
static_cast<RenderImage*>(renderer)->resetAnimation();
}
}
void ImageLoader::notifyFinished(CachedResource *image)
{
m_imageComplete = true;
Element* elem = element();
elem->document()->dispatchImageLoadEventSoon(this);
if (RenderObject* renderer = elem->renderer()) {
if (!renderer->isImage())
return;
static_cast<RenderImage*>(renderer)->setCachedImage(m_image.get());
}
}
}
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